No device is going to please everyone, but my B7K pleases the hell out of me. As noted, it leans toward the modern end of the tone spectrum, but it's amazingly versatile.
Not sure if it was this thread or another, but last week someone mentioned the Thin option. It's easy to dismiss entirely, because it has both less low end and less volume than Raw and Fat. When I first heard it, I assumed I'd never use it... "must be a specialty thing for four-stringers, I should probably avoid it with my five strings". Then I saw that Nolly Getgood -- and some fellow TBers -- use it to "tighten up their low end". Nolly plays 6-string bass with a low F#, so obviously it can't be bad for extended range.
I tried Thin mode on Saturday. I've been delighted with Raw and Fat, but Thin was AMAZING at this particular gig -- we played outdoors, and FOH was used for vocals and kick only! My lows sounded big and even from low Bb (that band detunes) to the upper register. I also used the Boost attack setting, which added the perfect tubey/glassy edge to my tweeterless NV610 cab. I was totally thrilled, and two musicians in the audience also complimented my tone. Matter of fact, one of them said "You sound even better than you did here a couple of months ago. Did you get a new rig?" I said "nope, not a new rig, a new pedal". Actually I don't remember what pedal(s) I used last time, might've been the B7K (it's not that new for me), but it was the first time I've gigged the Thin setting.
The B7K sounded great for all the rock I played, from Metallica, Seether, RATM to classic AC/DC, Zeppelin, Van Halen.
Again... just because I love the BxK doesn't mean everyone else should, but the longer I've owned mine, the more I love it.
Gratuitous pic from Saturday's parking lot party... bless my mess.